If you landed on this page searching for forex trading or currency predictions, you probably have a picture in your head of a forex broker with leverage, lots, pips and spreads. PolySouq is not that. It is one of the prediction markets that runs on a shared pool: you put a fixed amount of USDC on a dated yes/no question about a currency outcome, such as whether EUR/USD closes above a given level on a given date, or whether a central bank changes its rate, and you can never lose more than that amount. Your return comes from the pool of participants who took the other side, after a 10% commission taken from the losing pool only. No spread, no swap, no margin, no liquidation. This guide walks through event trading on currencies step by step: which currency questions work as a yes/no market, what the Gulf dollar peg means if you trade from Saudi Arabia, the UAE or Kuwait, what moves the major pairs, how to read the pool probability against your own estimate, how to size a position, and why you should read the settlement source and close time before anything else. The money is real and losing the full amount is possible.
Most people who type currency trading or forex trading into a search engine expect a forex broker's platform: a margin account, leverage of 1:100 or more, pairs bought and sold in lots, profit and loss measured in pips, and stop-loss and take-profit orders. It is worth setting that expectation straight from the first line: PolySouq offers none of that, and does not try to imitate it. What it offers is an entirely different kind of instrument known as prediction markets or event markets, where you do not buy exposure to a moving price; you take a position on a specific, dated question about a currency outcome.
The idea is simple. A question is posted, such as "Will EUR/USD close above a given level on a given date?" or "Will the Federal Reserve cut its rate at its next meeting?", and you choose "Yes" or "No" and put a fixed amount of USDC on it. Everyone who chose "Yes" puts their money into one pool, and everyone who chose "No" puts theirs into the opposite pool. At settlement, those who answered correctly split the other side's pool in proportion to what each of them put in, after a 10% commission taken from the losing pool only. That is event trading in its purest form, and you can browse the questions currently open in the currency markets section.
The practical differences you need to absorb before reading further:
If what you want is to speculate on minute-by-minute price moves with leverage, this page will save you time: that is not what you will find here. If instead you want to express a specific view on a specific currency outcome on a specific date, with an amount fixed in advance and your maximum loss known upfront, keep reading. And a reminder from the outset: the money used is real, and losing the entire amount you put in is a live possibility on every position.
The best way to understand what PolySouq offers on currencies is to set it side by side with what a conventional forex broker offers, because both use the word "trading" but what happens behind the word is radically different. The table below compares the two line by line, from what you are actually buying to how the platform makes money. Note that the columns are not "better" and "worse"; they are two instruments for two different purposes.
The most important row in this table is "What you must get right to win". In leveraged forex, you can be right about the final direction and still lose, because the price moved against you temporarily by enough to liquidate your position before it came back. In prediction markets there is no path, only an outcome: if EUR/USD is above the stated level at the moment of settlement, you are right, whatever the price did along the way. That is the core advantage, and at the same time the core constraint, because you cannot reduce your loss midway if you change your mind.
The second most important row is "Counterparty". In a shared pool there is no party that profits from your loss specifically; the only people who benefit from you being wrong are the participants who were right, and the platform's commission is deducted from the losing pool regardless of which side lost. A deeper explanation of this difference, and why it changes how you think about risk, is in prediction markets vs forex trading.
Not every idea about currencies can be turned into a good yes/no question. A good question in event markets has three properties: a single outcome that leaves no room for interpretation, a single data source announced in advance, and a precise moment at which the outcome is measured. The further a question drifts from those three, the more disputes arise at settlement and the worse it becomes as a trading instrument. The table below classifies common currency question formats by how well they suit a yes/no market; the examples illustrate types of format, and the questions actually available change constantly in the currency markets section.
You will notice that the best questions are those that end in a discrete event needing no interpretation: a central bank statement, or a published closing price. "Touch" and "stay within a range" questions are possible, but they need tick data throughout the period, and any dispute over whether the price really "touched" a level in a given second creates a grey area. That is why the first question you should ask of any currency market is: can I know in advance, without any ambiguity, how this question will be read at the moment of settlement?
One more point: some questions are technically valid but useless for trading, such as the Gulf peg question. The perceived probability of the riyal or dirham changing its peg within a short window is extremely low, so the pool piles overwhelmingly onto "No", and the potential return for choosing "No" becomes tiny while the risk to the full amount remains. That does not mean the question is impossible; it means the best currency questions for a Gulf resident are usually about the major pairs and Fed decisions, not their local currency.
To form your own estimate on any currency question, you need a working understanding of what moves the major pairs over the time horizons prediction markets use: days, weeks and months, not minutes. Over those horizons, the undisputed first factor is the interest rate differential between the two countries and expectations of how it will change. When the market expects a central bank to raise its rate, or hold it high for longer than its counterpart, its currency tends to rise because holding it earns a higher yield. That is why most of the big moves in EUR/USD or GBP/USD over the past two years have been tied to the repricing of expectations for the Fed, the European Central Bank and the Bank of England.
The second factor is inflation and jobs data, because that is the input central banks build their decisions on. The consumer price index report, the US non-farm payrolls report and purchasing managers' indices all move rate expectations before the rate itself moves. A good reader of the question "Will EUR/USD close above a given level by month-end?" knows which data releases fall inside that window and which of them can change the picture. The third factor is risk appetite: in anxious periods participants lean towards the dollar, the yen and the Swiss franc as havens, and in optimistic periods towards higher-yielding or growth-linked currencies.
The fourth factor, and a very important one for readers in our region, is oil and commodities. The Canadian dollar and the Norwegian krone move with oil prices, and the Australian dollar with metals and Chinese demand. Someone who follows energy markets closely sometimes holds a more confident view on a pair like USD/CAD than on EUR/USD. A summary of the factors to review before every currency position:
That last point deserves expanding. A pair that typically moves 1% a month does not need a miracle to close above a level 0.5% from its current price, while a level 3% away needs a genuine catalyst. Comparing the distance with the pair's historical volatility gives you a numerical starting point for your estimate, before you add your view on the catalysts ahead.
Most readers of this guide live in economies whose currencies are pegged to the US dollar, either fixed or close to it, and that changes how you think about currency trading entirely. The Saudi riyal, UAE dirham, Qatari riyal, Bahraini dinar and Omani rial have been fixed at set rates against the dollar for decades, while the Kuwaiti dinar is pegged to a basket of currencies with undisclosed weights, dominated by the dollar, so it moves within a narrow band rather than being completely fixed. The table below summarises the situation as publicly known.
The first conclusion from this table: if you earn and spend in riyals or dirhams, you already live "inside the dollar". When EUR/USD rises, the cost of your trips to Europe and your purchases from it rises by roughly the same proportion, and when it falls the opposite happens. So a question like "Will EUR/USD close above a given level?" is not an abstract one for a Gulf resident; it is a question about their real purchasing power. That makes the major pairs with the dollar on one side the natural area of interest in prediction markets.
The second conclusion: because of the peg, Gulf central banks have historically tended to move their rates with the US Federal Reserve to keep the peg stable, with relatively more independence in Kuwait thanks to the basket regime. That means the question "Will the Fed cut rates?" is in practice also a question about the cost of your mortgage and the return on your local deposits. A Gulf reader who already follows the Fed for personal reasons has half the work needed to form a view on rate-decision markets already done.
The third conclusion is a warning: "Will the peg change?" questions look attractive because the answer seems obvious, but the obviousness itself is the problem. When everyone agrees on "No", the pool piles onto one side, the return on "No" becomes tiny while the risk to the full amount remains, and going in on "Yes" is a position on a very rare event. None of this means these questions are off-limits, but it does mean their trading value for the ordinary participant is limited compared with questions on the major pairs and central banks.
In shared-pool event markets there is no "price" in the sense you know from forex; there is a ratio of how the money is split between the two sides of the question. If the "Yes" pool holds 4,000 USDC and the "No" pool holds 6,000 USDC, then "Yes" has 40% of the total, and that ratio is the participants' rough collective estimate of the probability that "Yes" happens. This is the implied probability, the most important number on the page, and it is explained in detail in reading prices and probabilities.
But the implied probability alone is not enough, because the commission is deducted from the losing pool before distribution. In the example above, if "Yes" wins, every 1 USDC on "Yes" returns 1 + (6,000 ÷ 4,000) × 0.9 = 2.35 USDC. The break-even point is 1 ÷ 2.35, or about 42.6%, not 40%. That means going in on "Yes" is worthwhile on average only if your personal estimate of the probability of "Yes" is above 42.6%, clearly above the pool's share. The general rule: the commission pushes the break-even point slightly above the visible share; the more your side is the minority in the pool, the smaller the gap between the share and the break-even point, and the more your side is the overwhelming majority, the larger the gap.
The practical steps to turn this into a decision:
This comparison between your estimate and the break-even point is the heart of expected value, and the full calculation method with examples is in the guide to calculating expected value step by step. What you must always remember: positive expected value in your view does not mean you will win this particular position; it only means your decision is sound if repeated many times, and losing the full amount on any single position remains a realistic possibility.
Let us make the numbers concrete with a full example using PolySouq's actual payout formula: participant's payout = their amount × (1 + losing pool ÷ winning pool × (1 − commission)), with a 10% commission. Assume a question of the form "Will EUR/USD close above a set level on a set date?", and you put 100 USDC on "Yes". When the market closed, the "Yes" pool was 4,000 USDC and the "No" pool was 6,000 USDC. The table shows what happens in each scenario.
Notice three things in this table. First: your original amount comes back to you in full when you win, on top of your share of the profit; the 235 is 100 of your principal plus 135 from the other side's pool. Second: the total paid to winners plus the platform's commission equals exactly the total put into the market, and that condition is checked on every market individually, so money that does not exist can never be paid out. Third: the commission is taken from the losing pool only, which is why the platform earns 600 in one scenario and 400 in the other, and earns nothing if nobody loses.
The example also highlights the asymmetric nature of the two sides. Going in on the minority ("Yes" here) gives a higher multiple because you share a larger pool among fewer people, and going in on the majority gives a smaller multiple. There is no side that is "better" in itself; the only question is which one you see as priced below its true probability in your view. And since the final ratios are set at close, not when you enter, the multiple you see while browsing the page may change, up or down, until the last moment.
Finally, do not let the number 235 distort your picture of the risk. In the other scenario the 100 USDC disappears entirely, and there is no way to recover part of it by exiting early. That is what it means for the maximum loss to be known in advance: it is known, but it is total.
In leveraged forex, "position size" is a complicated question involving lots, margin ratio and stop-loss distance. In prediction markets the question is far simpler and, at the same time, far stricter: how much USDC do you put on this question, knowing that all of it may disappear? There is no stop-loss to limit the damage, no early exit, no partial liquidation. Position size is the only risk-management tool available to you, which is why it must be decided before you look at the probabilities, not after.
The practical rule used by most people who deal with binary-outcome instruments is to allocate a small, fixed percentage of the capital set aside for this activity to each position, so that a string of consecutive losses does not affect your ability to continue. The percentage itself depends on your confidence in your estimates and on how many markets you enter at the same time, but the principle is constant: any amount you put on a currency question must be one you can lose in full without it changing anything in your financial life. That is not a hedging phrase; it is a literal description of what happens in the worst-case scenario on every position.
Additional practical points specific to currency markets:
The full framework for capital management in this kind of market, including how to handle losing streaks and how to size your overall allocation, is in the guide to risk and capital management. And to be clear once more: the money here is real, there is no demo version or virtual balance to practise with, and the first amount you put in is real money exposed to total loss.
In currency markets specifically, there is no single globally agreed "closing price" as there is for a stock listed on one exchange. The currency market runs around the clock through different liquidity providers, and the price shown at a given moment may differ by a few pips from one source to another. When the question is "Will EUR/USD close above a set level?", a few pips may be the difference between "Yes" and "No". That is why the market's declared settlement source and the exact measurement time are the two most important lines on any currency market page, and you should read them before thinking about probabilities or size.
What to verify in each market's terms before entering:
How markets are settled and their results announced is explained in how markets are settled transparently. And the financial rules for exceptional cases are clear and fixed: if the market is cancelled or voided by the operator, all amounts are returned in full and nothing is partial; if there are no losers because everyone was right, amounts are returned in full and the commission is zero; and if nobody put anything on the winning side, the market is voided, all amounts are returned and the commission is zero. In all of these cases the platform earns nothing, because it earns only from an actual losing pool.
Understanding this point properly changes how you trade. For example, a question measured at the close of the New York session on Friday means any movement in the Asian hours afterwards does not matter. A question whose entry closes an hour before the inflation data is released means you are taking a position before the data, not after it, with no room to change your mind once it is out. Finally, remember that cancellation in football markets lets you recover your amount before kickoff, but that feature is specific to football; in currency markets there is no self-cancellation once the amount is placed.
The cleanest questions in the entire currency world are central bank decision questions, because the outcome is announced in a single official statement at a time known in advance, with no room for dispute over "which source" or "which second". Will the Fed cut rates at its next meeting? Will the change be 25 or 50 basis points? Will the European Central Bank hold? All of these are ideal yes/no questions, and at the same time the biggest force moving currency pairs over the medium term. You can browse this category in the central bank interest rates section.
What sets these questions apart from level questions is that they end in a discrete event rather than a continuous price, and that the amount of public information about them is enormous: committee members' remarks, minutes of previous meetings, the inflation and jobs data the decision rests on, and published economists' forecasts. That means the pool for these questions is usually more "mature" and closer to consensus, and the real opportunity appears in contested meetings where opinion is split between two options, not in meetings where everyone agrees on the result.
Practical frameworks for this category of market:
The complete strategy for handling these markets, including how to read the banks' signals before a meeting and avoid the common traps, is explained in the guide to trading central bank rate decisions. And a necessary warning: even on questions whose answer seems obvious, there have been many historical surprises from major central banks, and a pool piled onto one side does not make that side guaranteed; money in the dominant pool is exposed to total loss exactly like money on the other side.
Getting started on PolySouq is straightforward and nothing like opening an account with a forex broker. Creating an account is free, and there is no demo account, virtual balance or signup bonus; what there is, is a real account running on real money from the first moment. The money used is USDC on the Polygon network exclusively, and the minimum deposit is
Deposits work on a "personal deposit address" model: after creating your account you receive your own deposit address on the Polygon network, and you send USDC to it from any source you own. Withdrawals are in USDC only, to an address on the Polygon network that you specify yourself. That means you need to already have a way to obtain USDC and to convert it back into whatever you need later, and any mistake in the network or address when sending is your responsibility. The details, fees and common deposit mistakes are explained in the withdrawals, deposits and fees guide.
A practical order for your first currency position:
The detailed, illustrated steps for opening an account and executing a first position are in the open an account and make your first trade guide. And before you start, one point that must be stated plainly and without ambiguity: PolySouq provides a single financial channel, USDC on the Polygon network, offers no local banking channel in any country, and makes no assertion about the legal, regulatory or tax status of this activity in your country. Verifying your local regulatory and tax position is your responsibility before depositing. And as in every part of this guide: the money is real, losing the full amount placed in any market is a live possibility, and nothing here constitutes personalised financial advice.
No. PolySouq offers no leverage, margin, lots, pips, spread or overnight charges. What you do is put a fixed amount of USDC on a dated yes/no question about a currency outcome, such as a pair closing above a given level on a given date or a central bank decision. The most you can lose is the amount you put in, and there is no margin call or liquidation. If you are looking for leveraged speculation on a moving price, this is not the right instrument for you.
A forex broker sells you leveraged exposure to a continuously moving price: you gain or lose with every pip, can exit at any time, pay spread and swap, and may be liquidated before the price reaches your target. In prediction markets you take a position on a single outcome at a single set moment, with a fixed amount; the price path along the way does not matter, you cannot exit before settlement, and your return comes from the pool of participants who chose the other side after a 10% commission from the losing pool only. The first is a tool for speculating on movement; the second is a tool for expressing a view on an outcome.
PolySouq's mechanism differs fundamentally from the betting model, where a "house" stands on the other side of your position, sets the odds and profits from your loss. On PolySouq there is no counterparty from the platform at all: participants put their money into two opposing pools, those who were right split the pool of those who were wrong in proportion to their amount, and the ratios are set by the participants' own money, not by the operator. The platform's 10% commission is deducted from the losing pool only, so if everyone is right or the market is voided, all money is returned and the commission is zero; the platform does not profit from your loss for itself but takes an administrative share of a pool that goes to other participants anyway. We describe the instrument as event trading or prediction markets, and leave the legal and religious characterisation in your country to your own qualified sources.
The formula: your payout = your amount × (1 + losing pool ÷ winning pool × 0.9). Example: you put 100 USDC on "Yes"; at close the "Yes" pool was 4,000 and the "No" pool was 6,000, and "Yes" won. The losing pool is 6,000, the commission of 600 is deducted from it, and 5,400 is distributed among "Yes" holders in proportion to their amounts. Your share is 100 ÷ 4,000 × 5,400 = 135 profit, so you receive 235 USDC (your original 100 in full plus 135). The final ratios are set at market close, not when you enter, so the multiple you see while browsing is indicative.
In every exceptional case the money is returned in full, and there is no partial refund. If the operator cancels or voids the market, all amounts are returned in full. If every participant was right and there are no losers, amounts are returned in full and the commission is zero. If nobody put anything on the side that actually happened, the market is voided, all amounts are returned and the commission is zero. On every market it is verified that the total paid to winners plus the commission equals exactly what was put in, so money that does not exist is never paid out.
No. In currency markets there is no early exit and no cancellation once the amount is placed; your position stays in the pool until settlement and is decided only then. The one exception on the platform is football markets, where the amount can be cancelled before kickoff and recovered in full, and that does not apply to currency or central bank markets. So size your position on the basis that the amount is locked until settlement and may be lost in full.
The minimum deposit is
No. PolySouq offers no local-currency channel in any country, for deposits or withdrawals, and has no local banking rails. Deposits are in USDC on the Polygon network only, and withdrawals are in USDC only to an address on the Polygon network that you specify. Converting your local currency into USDC and back happens outside the platform by your own means, and verifying your local regulatory and tax position is your responsibility.
It is one side's pool as a share of the total money in the market. If the "Yes" pool holds 4,000 USDC and "No" holds 6,000, then "Yes" has a 40% share, which is the participants' rough collective estimate of the probability of "Yes". But the actual break-even point is slightly higher because of the commission: the "Yes" multiple here is 2.35, so the break-even point is 1 ÷ 2.35, or about 42.6%. Going in on "Yes" is worthwhile on average only if your personal estimate is above the break-even point, and that comparison is the basis of the expected value calculation.
Almost, from a trading standpoint. The Saudi riyal, UAE dirham, Qatari riyal, Bahraini dinar and Omani rial have been fixed at set rates against the dollar for decades, and the Kuwaiti dinar is pegged to a dollar-dominated basket and moves within a narrow band. A "Will the peg change?" question gathers the pool on one side, so the return on the dominant side becomes tiny while the risk remains total. What matters more for a Gulf resident is that the peg means their real exposure is the dollar against other currencies, and that Fed decisions feed through to their local rates, so the most valuable questions for them are the major pairs and central banks.
There is no single global closing price for currencies, because the market runs around the clock through multiple sources, so each market specifies its reference source, measurement moment, time zone and the definition of the condition in its published terms. Read those terms on the market page before entering: which source, which hour and time zone, whether "above" includes equality, and the last entry time. A few pips may be the difference between yes and no on level questions, so the settlement source and measurement time matter more than the probabilities themselves.
We make no assertion about the legal, regulatory or tax status of this activity in any country, and claim no local licence or regulatory approval anywhere. What we can say clearly is what PolySouq offers: a single financial channel, USDC on the Polygon network, and no local banking channel in any country. Verifying your regulatory and tax position in your country of residence is your responsibility before creating an account or depositing.
The commission is 10% and is deducted from the losing pool only, before the rest is distributed to the winners. A winner pays no commission on their original amount, which comes back in full, and there are no entry fees, spread or overnight charges. If there are no losers or the market is voided, the commission is zero and all money is returned. In practice this means the platform earns only when actual profit has moved between participants, and earns nothing from any particular position against you.
No. There is no demo account, virtual balance, free coins or signup bonus. The account is real from the first moment and runs on real USDC, and any amount you put on a currency question is exposed to total loss. The practical alternative for trying things out is to start with the smallest amount you can afford to lose, and log your estimates and the markets' outcomes to assess the quality of your judgement over time before increasing size.
Disclaimer: Prediction markets are a legal and legitimate way to trade information about the outcomes of future events. However, trading carries risk and you may lose the full amount you trade — so only trade what you can afford to lose. This content is educational and is not financial or investment advice.